CMakeLists: add DEBUGGER_WAIT_DIALOG compiler definition to Debug builds of libEGL and libvk_swiftshader

This matches what's in the manually managed vcxproj for the two modules.
We add these for non-MSVC as well so we might eventually add support
to those platforms. Note that these are guarded with #ifdef _WIN32
already, so there's no danger of this breaking non-MSVC builds.

Change-Id: Ie855eb4aa1006607fdf8799ccde72305c53f3508
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/30028
Presubmit-Ready: Antonio Maiorano <amaiorano@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Antonio Maiorano <amaiorano@google.com>